Olive trees (Olea europaea), the privet tree (Ligustrum obtusifolium), and white fringe tree (Chionanthus virginicus) produce the phenolic compound oleuropein. Oleuropein is created when these trees are damaged and acts as an insect deterrent. Soxhlet extraction and subsequent UV-Vis spectroscopy was performed on white fringe tree leaves to determine the rate of oleuropein production over time. Pure oleuropein which serves as a standard in the Beer’s Law plot is expensive. Extraction, subsequent separation, and purification was used in an attempt to obtain this compound from olive leaf nutritional supplements.

Extraction of oleuropein from olive leaf nutritional supplements and oleuropein levels created by white fringe trees

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